BirdAnalyst
Species · Maine · BBS 2026 Release · 1966–2025

Rock Pigeon Population Trend in Maine

All statesGeneralists

Rock Pigeon in Maine has surged: up 274% on the route-weighted index since 1968.

+274%Since 1968TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
54Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
57YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Rock Pigeon Trends in MaineNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Rock Pigeon has surged in Maine: up 274% on the route-weighted index since 1968.

Rock Pigeon Population Forecast in Maine

If the recent trend holds, Rock Pigeon in Maine is projected to fall about 40% by 2030 — from 5.9 in 2025 to a central estimate of 3.6 (95% range 0.00–7.3). A 5-year backtest shows a typical error of ±60.5%, with 40% of held-out values landing inside the 95% band.

-40%Change by 2030TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
3.6Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–7.395% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±60.5%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, Rock Pigeon in Maine is projected to fall about 40% by 2030 — from 5.9 in 2025 to a central estimate of 3.6 (95% range 0.00–7.3). A 5-year backtest shows a typical error of ±60.5%, with 40% of held-out values landing inside the 95% band.19662030
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
20263.50.007.2
20273.50.007.2
20283.60.007.2
20293.60.007.3
20303.60.007.3

Rock Pigeon Survey Routes in Maine

Routes recording Rock Pigeon in Maine.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
Cornville7220252012
Rome6520241996
Ft Fairfield3320051993
Charleston3020211987
Grnd Lk Strm1620001966
Stacyville1420232022
Boundary1220151993
Brooks1120212005
Reeds1020251990
Benton1019801980
Church Hill920171991
Greenwood820251979
Moose River820081983
Winn820221998
Cape Neddick620221977
Hermon620191966
Cambridge520141975
Medway520251976
Ludlow519961993
Jefferson519911991
Turner420101983
Warren419891979
Hancock420251974
Greenville420101977
Washburn420051979

Rock Pigeon Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.